The Influence of Seasonal Water Level Fluctuations on the Soil Nutrients in a Typical Wetland Reserve in Poyang Lake, China
| Autor: | Shuangshuang Zhang, Amechi S. Nwankwegu, Jin Wei, Maoqing Duan, Eyram Norgbey, Yiping Li |
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| Rok vydání: | 2021 |
| Předmět: |
Wet season
Geography Planning and Development TJ807-830 Growing season Wetland 010501 environmental sciences Management Monitoring Policy and Law TD194-195 01 natural sciences Renewable energy sources Nanjishan wetland reserve Nutrient nutrients vegetation Dry season GE1-350 0105 earth and related environmental sciences Integrated Fertility Index geography geography.geographical_feature_category Environmental effects of industries and plants Renewable Energy Sustainability and the Environment soil fertility 04 agricultural and veterinary sciences Soil quality Environmental sciences Agronomy 040103 agronomy & agriculture 0401 agriculture forestry and fisheries Environmental science Soil fertility Eutrophication |
| Zdroj: | Sustainability Volume 13 Issue 7 Sustainability, Vol 13, Iss 3846, p 3846 (2021) |
| ISSN: | 2071-1050 |
| DOI: | 10.3390/su13073846 |
| Popis: | To comprehend the distribution characteristics of the nutrients and the variations in the soil fertility, a total of 23 samples were collected from Nanjishan wetland reserve in the dry season, wet season, and water-recession season. The study area was divided into four areas (A1, A2, A3, and A4) based on the local hydrological conditions, geographical locations, and nutrient load characteristics. The findings showed that the highest concentration of nutrients appeared in A1, followed by A2 due to anthropogenic activities and the sewage discharge along Ganjiang River. Except for the total amounts of nutrients (the total nitrogen (TN), total phosphorus (TP), and total potassium (TK)), the nutrient concentrations dropped in the wet season and recovered in the water-recession season. A close association between microorganisms and the soil nutrients was observed. The Integrated Fertility Index (IFI) indicated a significant spatio-temporal variability in the soil fertility. The soil quality was higher in the dry season. The values of the IFI displayed a decreasing trend during the growing season (wet season). The single factor standard index method (SFSI) suggested that the whole area had a potential risk of eutrophication, to which the TN could be considered a main contributor. |
| Databáze: | OpenAIRE |
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